paul sava

Page updated onApril 7, 2018

WEMVA diffraction focusing

This movie shows an example of wave-equation MVA for a
zero-offset data set. In this case, we use focusing in space, rather
than focusing in offset to assess the quality of the migrated image.
The frames of the movie depict:
the reflectivity model (diffractors),
the background velocity model,
a perturbation of the velocity model,
the corresponding image perturbation,
the backprojection from the image perturbation into the velocity model
(fat rays), and
the inverted velocity perturbation after 10 iterations of conjugate
gradients.